Study on the effect of Nb doping on the phase transition temperature of VO2

Xiaoyue Li, Yixin Wang, Bojian Fan, Hong Li, Sujun Shi, Bing Zheng*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The application of VO2 is limited by its phase transition temperature from metal to insulator. In this work, a two-step hydrothermal method was applied to explore the thermodynamic properties of Nb-doped VO2. In this way, the temperature of metal-to-insulator transition was largely reduced from 71? for pure VO2 to 34? for Nb-doped VO2. Furthermore, based on the first principles calculation, we investigated the lattice and electronic performances for pure and Nb-doped VO2. The calculations indicated that the difference between monoclinic and metallic structure of Nb-doped VO2 became less than those of pure VO2, which was caused by the displacement of Nb atom. This change played a key role on decreasing the phase transition temperature. In addition, the results of density of states showed that conductivity of Nb-doped VO2 didn't change too much.

Original languageEnglish
Title of host publication2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2022
EditorsYa Liu
PublisherSPIE
ISBN (Electronic)9781510654778
DOIs
Publication statusPublished - 2022
Event2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2022 - Guilin, China
Duration: 7 Jan 20229 Jan 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12244
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control, METMS 2022
Country/TerritoryChina
CityGuilin
Period7/01/229/01/22

Keywords

  • doping
  • first principles calculation
  • phase transition temperature
  • vanadium dioxide

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